1250 JPM (JPEG 2000 part 6) JPEG 2000 Image (Raster) The JPEG 2000 Compound Image File Format is an optional file format for storing compound images using the JPEG 2000 file format family architecture. A compound image is an image that may contain scanned images, synthetic images or both, and that preferably requires a mix of continuous tone and bi-level compression methods. 1 Digital Preservation Department / The National Archives 28 Aug 2012 28 Aug 2012 fmt/463 PUID image/jpm MIME jpm File extension 721 JPEG 2000 Compound Image File Format BOF: ....jP ..‡.{4}ftypjpm 1 Absolute from BOF 0 0000000C6A5020200D0A870A{4}667479706A706D